G Suite is a set of tools and features offered by Google, dedicated to businesses, giving them access to email addresses that resemble name@company.com and more than enough storage to keep and organize important files. It is an annual subscription for each user.
The advantages that make G Suite the best choice for your professional email:
Personalization of your email address
A complete set of professional tools (Gmail, Google Drive, Google Docs, Sheets, Slides, Calendar, Keep, Hangouts, and other Google applications)
Security and antivirus and anti-hacking protection that automatically detects suspicious activities, phishing attempts, and hacking
Easy-to-use admin console to manage (add/edit/remove) email accounts created.